Wikipedia, the open-source encyclopedia Web site that allows its users to create and edit its entries freely, is now the second most-visited reference Web site--up from number 13 at the beginning of
last year, and number three in January, according to data released Monday by research firm Hitwise. Dictionary.com remains the most popular reference site on the Internet. Wikipedia also has been
getting more hits from search engines lately. By March, the site was the 33rd most popular site in terms of receiving visits from search engines--up from the 146th most popular in June 2004.
--S.G.
